Gemstone



FIG. 1 is a top, front, right perspective view of a gemstone showing our new design;

FIG. 2 is a front view thereof; wherein the rear view is a mirror image of FIG. 2;

FIG. 3 is a front, right side view thereof; wherein the opposite rear, left side view is a mirror image of FIG. 3;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a bottom, front, right perspective view thereof. 

CLAIM The ornamental design for a gemstone, as shown and described. 